JM38510/31502BCA

Counter Dividers Overview

The Texas Instruments JM38510/31502BCA is a military-grade, low-power Schottky TTL decade counter housed in a 14-pin ceramic dual in-line package (CDIP). It operates within a supply voltage range of 4.5 V to 5.5 V and supports an extended temperature range from -55°C to 125°C. The device features asynchronous inputs for clocking and reset functions, enabling divide-by-ten counting sequences. It provides complementary outputs for the least significant bit and includes dedicated carry-out terminals for cascading applications.

Counter Dividers Feature Summary

• Military-grade construction with hermetic sealing
• Low-power Schottky TTL technology
• Asynchronous decade counting capability

Counter Dividers Applications

• Military digital logic systems
• Defense communication equipment
• Avionics timing circuits

Counter Dividers Procurement Notes

Verify that the component meets MIL-M-38510 Class B specifications. Confirm the presence of the 'JM' prefix indicating QML certification. Ensure the CDIP package matches the required footprint. Check for lead finish compliance if soldering is necessary. Validate the manufacturer traceability documentation.

Counter Dividers Selection Notes

Select this part when high reliability and radiation hardness are required. Use it instead of commercial SN74LS90 variants for harsh environments. Consider the CDIP package for superior thermal and mechanical stability. Verify compatibility with existing TTL logic families. Evaluate power consumption against system constraints.

Counter Dividers Part Context

This component belongs to the SN54LS90 family of decade counters. It shares functional similarities with the SN54LS92 and SN54LS93 binary counters. The JM prefix denotes qualification under Military Quality Level standards. It serves as a fundamental building block for frequency division and digital sequencing tasks.

Counter Dividers Replacement Considerations

SNJ54LS90J is a direct equivalent offering identical functionality and pinout. M38510/31502BCA may be available from other authorized distributors.